Attaching trimming strips to knitted articles



June 29, 1965 N. MARFORIO 3,

ATTACHING TRIMMING STRIPS TO KNITTED ARTICLES Filed Jan. '22, 1963 12Sheets-Sheet 1 Nerino Marforio,

ATTORNEY June 29, 1965 N. MARFoRlo ATTACHING TRIMMING STRIPS 1'0 KNITTEDARTICLES Filed Jan. 22, 1963 12 Sheets-Sheet 2 FIG. 3

INVENTOR Nerino Marforio ATTORNEY MUM June 29, 1965 N. MARFORIO 1,

ATTACHING'TRIMMING STRIPS T0 KNITTED ARTICLES Filed Jan. 22, 1963 12Sheets-Sheet 3 INVENTOR Nerino Marforio ATTORNEY June 29, 1965 N.MARFORIO ATTACHING TRIMMING STRIPS TO KNITTED ARTICLES Filed Jan. 22,1963 12 Sheets-Sheet 4 Mar-forao, W

ATTORNEY N. MARFORIO June 29, 1965 ATTACHING TRIMMING STRIPS TO KNITTEDARTICLES 12 Sheets-Sheet 5 Filed Jan. 22, 1965 FIG.

'ITORNEY Ne-rino Marforio FIG.12

June 29, 1965 N. MARFORIO 3,191,560

ATTACHING TRIMMING STRIPS TO KNITTED ARTICLES Filed Jan. 22, 1963 l2Sheets$heet 6 I m MENTOR er-ino Marfori ATTORNEY L June 29, 1965 12Sheets-Sheet 7 Filed Jan. 22, 1963 FIG.2O

FIG. 19

7 1 i 22 g b V Q Q a% Mk m m m m w F v\ 4 4 FIG. 23

Nerino Marforio- I ATTORNEY N. MARFORIO June 29, 1965 ATTACHING TRIMMINGSTRIPS T0 KNITTED ARTICLES 12 Sheets-Sheet 8 Filed Jan. 22, 1963 V I 0 FH M s MRZQ m X 2 J ,5 7 5 7 61(FIG.,27

FIG. 2a

INVENIOR Nerino Marforio, BYW

Z-EEEY mmcnme TRIMMING STRIPS T0 KNITTED ARTICLES Filed Jan. 22, 1963June 29, 1965 MARFORIO 12 Sheets-Sheet 9 IN V E 1 OR erino Marforio WATTORNEY June 29, 1965 N. MARFORIO 3,191,560

ATTACHING-TRIMMING-STRIPS TO KNITTED ARTICLES Filed Jan; 22, 1963 12Sheets-Sheet 1o erino Mar-f0 10,

/ ATTORNEY June 29, 1965 N. MARFORIO 3,191,560

ATTACHING TRIMMING STRIPS TO KNITTED ARTICLES Filed Jan. 22, 1963 12Sheets-Sheet ll F'IG.31

INVENTOR Nerino Marforio,

ATTORNEY ATTACHING TRIMMING STRIPS TO KNITTED ARTICLES N. MARFORIO June29, 1965 12 Sheets-Sheet 12 Filed Jan. 22, 1963 Q fierino MarforioATTORNEY United States Patent 3,191,560 ATTACHING TRIMMING STRIPS TOKNITTED ARTICLES Nerino Marforio, Milan, Italy, assignor to S.p.A.Virgmio Rimoldi & C., Milan, Italy Filed Jan. 22, 1963, Ser. No. 253,134t Claims priority, application Italy, Jan. 27, 1962, 2,011/ 62 4 Claims.(Cl. 112-197) It is known that in finishing smarter knitted articles forouter Wear, the edges of the openings of such articles, such as theedges of the neck opening, the ends of sleeves, the lower edges ofgarments and the like are pro vided with special types of trimmingstrips or so-called collars which are likewise knitted to form twosimilar flaps superposed in part at their borders and joined to theedges of the above-mentioned articles.

In order to attach the trimming strips or collars to the edges ofknitted articles for outer wear a linking operation is required and thisoperation is generally performed on a linking machine.

This method is slow and requires skilled workers which increasesconsiderably the cost of manufacture of knitted articles for outer wearfinished with trimming strips or collars of the above-mentioned type.

This invention obviates the above drawbacks and introduces aconsiderable simplification of the operations required for attachingtrimming strips to the edges of knitted articles for outer wear at amuch faster rate than possible by the use of linking machines. Moreover,the invention eliminates the need of skilled workers and provides amethod, different than known methods, of attaching the trimming stripsto the edges of knitted articles.

Another object of this invention is to adapt the known sewing machinesfor double-chain stitching to carry out the improved method.

According to this invention the improved method for attaching an outerWear trimming strip split to form two similar flaps superposed in partat their borders and joined to the edge of a knitted article comprisesthe following steps:

(a) Folding over each flap of the tirimming strips in the direction ofthe other flap so that the flaps are superposed in part;

(b) Inserting between the resulting folds of the flaps the marginal edgeportion of the knitted article;

(c) Pinching the marginal portion between the folds of the trimmingstrip;

(d) Connecting the marginal portion to the folds of the flaps by adouble-chain stitch seam extending parallel with the length of thesuperposed zones of the abovementioned portions of the knitted articleand trimming strip.

This invention moreover provides a machine adapted to effect adouble-chain stitch, wherein, in order to use the machine for attachingto the edges of knitted articles for outer wear two-fold trimming stripsthe machine is provided with a guide for the trimming strip and the edgeof the knitted article. The guide is arranged in proximity to the needleplate and bar of the machine and oriented in the direction ofdisplacement of the work under the action of the work feed members onthe machine during sewing. The guide is of Y-shape in cross section atleast over a certain length from an end thereof disposed towards theneedle plateand bar; to thereby define a conduit of a similar Y-shapedcross section, wherein the end portion of the diverging Y- branches orarms are folded over and have their extremities ending near theconnecting zone of the diverging 3,191,560 Patented June 29, 1965 armsor branches and middle branch or arm of the Y.- The guide is supportedin such a manner that its portion including the end portions of thediverging Y branches is intersected by the transverse plane of themachine in which the seam is formed, and is disposed at a height withrespect to the working plane of the machine such that the end of one ofthe diverging Y branches is beneath the working plane.

Other characteristic features and advantages of this invention will beclearly understood from the appended description referring by way ofexample to embodiments shown on the accompanying drawings, wherein:

FIGURE 1 is a perspective view of a sewing machine adapted to perform adouble-chain stitch seam, and adapted for carrying out the improvedmethod according to the invention;

FIGURE 2 is a perspective view of the same machine, wherein the guide isshown in a titlted position suitable for introducing thereinto atrimming strip to be attached to the edge of a knitted article; 7

FIGURE 3 is a perspective view on an enlarged scale of a zone of themachine in which the guide, needle and feed members for the work arearranged;

FIGURE 4 is a perspective view on an enlarged scale of a guide foreifecting folding of a trimming strip;

' FIGURE 5 is an exploded view on an enlarged scale of memberscooperating with the guide;

FIGURES 6 and 7 are a plan view and a front elevation view respectively,of a guide including the members shown in FIG. 5 and of the memberssupporting the guide in the machine frame;

FIGURE 8 is a view of a guide in the direction of an arrow A in FIGURE4;

FIGURES 9 and 10 are sectional views on lines IX-- IX and X-X,respectively, of FIGURE 6 showing the guide only;

FIGURE 11 is a plan view of a plate for closing the machine frame fromthe top;

FIGURE 12 is a sectional View on line XII-XII of FIG. 11;

FIGURE 13 is a perspective view of a lid slidably mounted in the plateshown in FIGURE 11;

FIGURE 14 is a sectional view through the edge of a knitted articleandthe two-fold border of the trimming strip, showing their mutualpositions before introduction into a guide;

FIGURE 15 is a cross sectional view illustrating the mutual positions ofthe edge of a knitted article and border of a trimming strip after theyhave been sewn together;

FIGURE 16 is a sectional View on a highly enlarged scale along the seamsection line XVIXVI in FIG- URE 15;

FIGURE 17 is a plan view on an enlarged scale of a needle plate on themachine;

FIGURES 18 to 20 are sectional views taken on line XVIIIXV III, XIXXIXand XXXX of FIGURE 17, respectively;

FIGURES 21 and 22 are a plan and a side view, respectively, of a feeddog unit for feed of the work being sewn;

FIGURE 23 is a sectional view taken on line XXIII- XXIH of FIG. 22;

FIG. 24 is a perspective view of the needle plate and cooperating feeddogs;

FIGURES 25, 26, 27 and 28 are views on an enlarged scale of a pressuredevice of the machine in side elevational and sectional views on linesXXVI-XXVI of FIG. 25, XXVlI-XXVII of FIG. 26 and in plan view,respectively;

FIGURE 29 is a perspective view of a sewing machine of a type similar tothe machine shown in FIGURES l to 13, adapted to carry out the improvedmethod by the use of means modified with respect to the means shown inFIGURES 1 to 13.

FIGURE 30 is a perspective view on an enlarged scale of a zone of themachine according toFIGURE 29, in which the edge of a knitted articleand trimming strips are joined and sewn together;

FIGURE 31 is a perspective view on an enlarged scale of a detail of themachine shown in FIGURE 29;

FIGURE 32 is a perspective view on an enlarged scale of a guide employedin the machine shown in FIGURE 29 to fold the trimming strip;

FIGURE 33 is a view of the guide shown in FIGURE 32 and supportintg bellcrank therefor on the side of the guide end opposite an end near thestitch-building region of the machine;

FIGURE 34 is a plan view of the guide;

FIGURE 35 is a view in the direction of the arrow F in FIGURE 33;

FIGURES 36, 37 and 38 are cross sectional views of the guide taken onlines XXXVIXXXVI, XXXVII XXXVII and XXXVIII-XXXVIII, respectively, inFIG- URE 34;

FIGURE 39 is a perspective view on an enlarged scale of a constructionaldetail of the machine shown in FIG- URE 29 in proximity to the guide;

FIGURE 40 is a perspective view on an enlarged scale of memberscooperating'with the guide;

FIGURE 41 is a perspective view on an enlarged scale of an additionalguide for the border of the' trimming strip opposite the border beingattached to the knitted article. i

In the drawing corresponding parts are denoted by the same referencenumerals throughout.

The machine shown in the drawings is of the arm type suitable foreffecting a double-chain stitch. The frame B carries a hinged tiltablevertical cover K pivotally mounted on a rod A. The cover K extendsparallel with the longitudinal middle plane of the machine and isarranged on a longitudinal side wall of the frame beneath a plate Lclosing the'frame from the top and serving as a working table for themachine. The cover K, together with the plate L closes access to theregion of the frame at which the feed members for the work being sewnand the looper are arranged to cooperate in a well known manner. ineffecting double-chain stitching. The machine is provided with aconventional needle bar C movable in a vertical direction and carrying aneedle D. A bar E is provided disposed perpendicular and parallel withthe needle bar and carrying a presser device H. The bar E is oifset fromthe needle bar D in the direction of the work feed, as describedhereafter.

Threads F1 and F2 are supplied to the needle and a looper (not shown)respectively.

- The cover K is provided at one end with a bracket K having attachedthereto by means of screws 1 a vertical strap 2 carrying a bellcrank 3.The top end of the bell crank is bent at right angles to form a plane 4having attached, for example by welding thereto, a guide G for atrimming strip R and for the edge of the knitted article H which is tobe provided with the trimming strip R. I

The bell crank is secured to the vertical strap 2 by means of a pair ofscrews 5. the shanks of which extend through a slot 6, FIGURE 4, cut inthe end of the'bell crank 3 remote from the guide G. The slot 6 is of alength and width such as to permit displacement of the bell crank 3 in avertical direction with respect to the strap 2 as well as an angularorientation thereof to the strap 2 Within an angle of a limited width.

The guide G, which is more clearly shown in FIGURES 3 to 10, is formedat its portion secured to the bracket 3, by-a metal plate bent in a Ushape, the branches or arms 7 and 8 of which are situated above theplane 4 of the bell crank 3. The branches 7 and 8 and other members i ofthe guide which shall be described hereafter, are all symmetricallyarranged with respect to a plane SS (FIGURES 8 and 10).

The side edges of the arms of the U-plate are stiffened by ribs Nprojecting outwardly and likewise U-shaped. The free ends of the arms ofthese ribs superposed on the branch 7 of the U-plate are interconnectedby a cross rib N. 1

The end edges 7 and 8', respectively, FIGURE 4, of the arms 7 and 8 ofthe U-plate are each formed at their region extending between the guideend 9 and approximately the longitudinal center line of the latter, withextensions P, FIGURE 4. These extensions P are symmetrically arrangedwith respect to the plane SS, FI"'- URES 8 and 10, and are speciallyshaped. The extensions each include sections 10 diverging with respectto the abovementioned plane SS and inclined to the latter. Thesesections are followed with arcuated intermediate sections 12 ending bysections 13 converging in the direction of the plane SS. The ends of thesections I3 are interconnected near the plane SS by a bridge piece 14.The latter extends parallel with the bottom 15 of the U-plate, FIGURE 6,and is of a length preferably equalling about fir the length of thesections of the edges '7 and 8 carrying the extensions P, the edges 16and 17 of the extensions are formed by consecutive sections variouslyinclined to the longitudinal middle plane of the guide perpendicular tothe arms 7 and 8.

The bridge piece 14 has secured thereto through a rod 11 a plate 18spaced from the inner faces of the diverging sections It} of theextensions P. The edges 18 and 18" of the plate 18 follow the edges 16and 1-7 of the diverging sections, opposite the direction in which theneedle bar is situated. The plate 18 is formed with two tongues 19 and24} extending within clearances confined by the diverging and convergingsections with respect to the plane SS of each of the extensions P. Thetongues I? and 29 are spaced from the inner faces of the diverging andconverging sections as Well as from the intermediate sections 12 and endby short sections extending beyond the guide and both inclined in thedirection of the plane SS (FIGURES 4 and 8). The rod 1 1 securing thebridge piece .14 to the plate 18 extends a short length beyond the endof the latter opposite the end carrying the tongues 19 and '20. i

It will be seen that the configuration of the above described guide G issuch as to form internally of its portion turned towards the needle barC a Y-shaped conduit, the diverging branches of which have their bottomends folded over in the direction of the plane of symmetry of the Y.

The clearance between the arms 7 and 8 of the guide G slidably receivesa flattened end portion 22 bent, FIG. 5, at right angles to a rod 23,extending beyond the bottom 15 of the guide G and ending in a knob 23a.The rod 23 is slidably mounted in the longitudinal direction of theguide G in a through hole in a stud 24. The latter is situated at theend of a cross member 25 secured by means of screws 26 to the bottom ofeach of the stiffening ribs N on the guide G. The rod 23 carries twostraps 27, 2S clamped to the rod by means of screws and arranged betweenthe portion 22 of the rod and stud 24 and between the latter and theknob 23a, respectively. A spring 29, FIGURES 5 and 6, is interposedbetween the strap 28 and stud 24 and tends to move the rod 23 towardsthe guide bottom 15 by its portion 22. The width of this movement isdetermined by the position on the rod 23 of the strap '27. The strap 28is so shaped on its end opposite the guide G as to form a tooth 28awhich can be engaged by a small tooth 30a on a pivoted lever 30 mountedfor oscillation about an axis perpendicular to the rod 23 in a fork fastwith the stud 24. A spring 31 constantly urges the lever 30 towards itsposition in which the tooth 30a thereon is in the path of the tooth 28aon the strap 28. The position of the straps 27 and former portion 42a.

28 is of course determined according to the width of the trimming stripto be introduced into the guide. The structure just described permitseasy release of the tooth 30a from the strap 28 by acting on the lever30. The portion 22 of the rod 23 is moved towards the guide bottom andthe rod portion 22 is withdrawn from the edge of the trimming strip. Across slot 32 cut in the branch 7 of the U-plate on the guide a shortdistance from the cross rib N facilitates introduction into the guide ofthe trimming strip to be sewn.

The guide G is secured to the bell crank 3 in such manner that its planeof symmetry SS is at a small angle to the working plane L on the machineand is inclined in the direction of the transverse plane of the machinein which the needle bar is situated. Moreover, as will be seen fromFIGURE 3, the bell crank is at a height such that the intermediatesection 12 and a portion of the converging section 13 of the extension Pof the arm 8 of the U-plate are situated beneath the edge 33 of anopening in the plate L, FIG. 3, but above a triangular plate 34 carriedby the cover K. An edge 34a of the plate is juxtapositioned, in thenormal position of the cover according to FIGURES l and 3, to aninclined end section 33a of the opening in the plate L, FIGS. 3 and 11,forming the working plane on the machine. The cover K has securedthereto by means of screws a bell crank 36 to which a lever 37 providedwith a handle is securely fixed. By acting on the latter the cover K andguide G including its above described attachments can be moved fromtheir operative position shown in FIGURES 1 and 3, in which the cover isretained by snap means (not shown), to a backwardly tilted positionshown in FIG- URE 2, in which the trimming strip is introduced into theguide before star-ting the sewing process.

The edge of the guide G opposite the edge near which the rod 23 moves,is slightly spaced from the inclined edge 38 of the plate L, FIGURES 11and 12. The edge 38 is cut away a certain distance from the needle bar Cand is completed by a flap 39a bent downwardly on a plate 39 screwed toa flat cover 40 slidably mounted through a dove tail joint in the plateL, of which it conceals an opening cut for access to the machine membersarranged in the frame.

The needle plate 42, FIGURES 17 to 20 and 24, which is fitted into asuitable opening in the plate L at the region beneath the needle bar C,is formed with a portion 42a and a reduced portion 42b extendingparallel with the A slit 43 is cut in the portion 42a and has the needleD extending therethrough during stitch building. This portion 42a ismoreover formedwith an inclined surface 42c facilitating feed of thework. The needle plate 42 is formed with longitudinal openings 44, 45,46 and 47 for the feed dogs to extend therethrough, the movement of thedogs results in feed of the work being sewn.

The feed dog unit includes a main feed dog 48 provided with three setsof serrations 48a, 48b and 480, a small additional feed dog 49 securedto the main feed dog 48, and a differential feed dog 50, the serrations50a in which are aligned with the serrations 48a in the main feed dog.The stroke of the dog 50, however, can be varied in known manner withrespect to the stroke length of'the main feed dog. The additional feeddog 49 is formed with a small number of serrations 49a, preferably twoin number, aligned with the serrations 48b in the main feed dog. Theadditional feed dog 49 is of approximately bell crank shape and isformed in its horizontal branch with a longitudinal opening 49b for theneedle D of the machine to extend therethrough. This is necessary,inasmuch as its serrations should be on the opposite side of the needleD with respect to the serrations 48b in the main feed dog. Thisarrangement, which is useful in sewing knitted articles, is clearlyvisible in FIGURE 24 which shows the needle plate 42 and serrations inthe various 6 feed dogs which are shown in their position near the endof their work feed stroke.

A presser device H is arranged above the needle plate 42 and is securedto the bar E (FIGS. 1 to 3 and 25 to 28). The presser device comprises asupport 51 carrying a vise 52 which can be clamped by means of a screw53 around the bar E. The support 51 carries a presser foot 54 in which aslit 55 is formed. The latter is in register with the slit 43 in theneedle plate for the needle D to extend therethrough during stitching.The presser foot 54 is supported for oscillation by the support 51through the interposition of a pivot 56. An auxiliary presser foot 57 ofreduced width and increased length with respect to the foot 54cooperates with the portion 42b of the needle plate. The auxiliarypresser foot 57 is secured by means of a pin 58 and a plunger 59 axiallymovable in a seat in the support 51 and is pressed towards the needleplate by springs 60 and 61 hearing at one end on the end 'of the plunger59 and in proximity to the raised tip 57a of the auxiliary presser foot,respectively, their other ends being secured to the support 51 by meansof a screw 62. The auxiliary presser foot 57 is formed with a lateralperpendicular projection 57b forming guide surfaces for'the folds in thetop flap R of the trimming strip, as hereafter described.

As mentioned above an object of this invention is to suit a double-chainstitch sewing machine to attach to the edges of knitted articles forouter wear trimming strips split at their border to be connected to theknitted article to form two separate flaps.

The operations carried out to this end on the above described machinewill be better understood from the figures in the drawings.

It will be seen in FIGURES 4 and 14 that the flaps R and R" of the splitborder of the trimming strip R are initially rolled. In order to effecta joint of the type shown in FIGURE 15, a trimming strip R is introducedbetween the abovementioned flaps and the edge of a knitted article M forouter Wear into a guide G, so that the strip body is caught between thearms'7 and 8 of the U-plate and the flaps R and R are introduced intoconduits confined by the diverging sections 10 and converging sections13 of the extensions P of the arms 7 and 8. The edge of the knittedarticle M for outer wear to which the flaps R and R should be sewn isarranged to abut the bridge piece 14. By sliding, in the direction ofthe needle bar, the trimming strip R and knitted article M are bothintroduced in their mutual arrangement shown in the left-hand portionof- FIGURE 4 under the presser device. The latter clamps the marginalportion of the knitted article M between the folds of the flaps R and Rof the strip R which are bent on issuing from the guide G in a directionopposite totheir initial direction visible in FIG. 14. The guide is soarranged that sewing of the folded flaps R and R to the edge of theknitted article M is effected, for example by a needle thread NT and alooper thread LT, in portions R and R of the flaps proximate to thefolding zones of the flaps. The edge R" of the strip R is guided duringsewing along the portion 22 of the rod 23 inserted between the arms orbranches 7 and 8 of the U-plate. The special configuration of the plate18 and edges 16 and 17 of the extensions P of the branches 7 and S ofthe guide is intended to facilitate introduction of the strip R into theguide G during preparation of the strip for sewing and to afford aprogressive folding of the flaps R and R of the strip in the desiredmanner during sewing.

A modified embodiment shown in FIGURES 19 to 41 differs from theembodiment according to FIGURES l to 28 mainly in the following points.

The extensions P on the arms 7 and 8 of the U-plate include at the rootof their diverging sections 10 sections 10' which are substantiallyperpendicular to the arms 7 and S and decrease in height in thedirection of the needle bar. The plate 18 extends in an oppositedirection in the form of a flattened tongue 64 reaching nearly to theedge of the U-plate. This tongue is .slightly spaced from the edges 7'and 8' of the U plate and is situated in the plane of symmetry SS of thelatter.

The means for guiding the free edge R' of the trim-' ming strip R orcollar include a bar 65 slidably mounted between the branches 7 and 8parallel with the bottom of the U-plate; 66 extending through the bottom15 of the plate and is guided in a through hole 67 (FIG..40) cut in theheight of a bolt'68. The latter is secured to the plane 4 of the bellcrank 3 by means of a nut 69. The head of the bolt 68 is moreover formedwith a tapped hole 7% connecting with the through hole 67. A screw 71 isscrewed into the tapped hole 70 and stabilizes on tightening theposition of the rod 66 and bar 65 with respect to the guide.

Auxiliary means S (FIGURE 41) is provided at the level of the presserdevice for guiding the free edge of the trimming strip after it issuesfrom, the guide G. This means comprises a slide plate 72'formed with alongitudinal slot 73, superposed on the slidable cover 46 which slidesin the manner described above in a suit: able seat in the plate Lforming the working plane of the machine. The cover 40 carries a pivot74 and a screw 75 extending through a slot 73 in the slide plate 72, andso arranged that the slide plate 72 is slidable in a directionperpendicular to the work feed. A knob 76 can be screwed onv the screw75 and serves to hold the slide plate 72 in the desired position. Theauxiliary guide comprises a U-shaped strap 77 secured to the end of theplate 72 and opening towards the presser device. The position of theslide plate 72 is of course selected so that a bottom 77a of the strap77 is aligned with the face of the bar 65 opposite the rod 66. Theabovedescribed auxiliary guide could be used also in connection with theembodiment described with reference to FIGURES 1 The last constructiondetail distinguishing the embodiment shown in FIGURES 29 to 41 from theone shown in FIGURESl to 13 is the provision of a cover plate '73 whichis secured by means of screws 79, FIGS. 31 and 39, to the cover K. Thiscover plate is formed at the top with an oblique portion 80 bent atright angle to the remainder of the plate 78. This portion isjuxtapositioned relative to the edge of the triangular plate 34 which islikewise carried by the cover K which, as explained above, completes theplate L. The oblique portion 80 on the plate 78 facilitates access ofthe lower flap R of the strip R to the guide G.

It will be understood that, the principle of the invention is leftunaltered, various construction details of the guides and cooperatingmachine parts on which the guides are mounted, can be widely varied withrespect to the examples described and shown without departing from thescope of this invention.

For example, the length of the extensions P, measured in the directionof the work feed, can be varied. The same applies to the means forsupporting the guide G which might be anchored instead of to thetitltable cover K to a stationary portion of the machine frame D.

Construction details of the presser device as well as of the needleplate and feed unit could likewise be varied, though the correspondingmembers as described and illustrated should be preferred in that theyafford successful sewing.

What I claim is:

1. A double-chain sewing machine having a work sup- The bar 65 issecured to the end of a rod port, a needle plate, work feed members anda needle bar for attaching an outer wear trimming strip split to formtwo similar flaps superposed in; part at their borders and joined to theedge of a knitted article, said guide comprising a Y-shaped conduit incross section with the open end of the Y turned toward the needle plateand the needle bar of the machine, said guide comprising bent over endportions on the diverging arms of the Y, converging sections connectedto said bent over portions situated within and parallel with saiddiverging Y arms, a bridge piece joining said converging sections attheir ends adjacent the junction of the diverging Y arrns defining asubstantially V-shaped conduit in cross section, a V-shaped plate incross section supported by said bridge piece within said V-shapedconduit, tongues on said V-shaped plate fitting into each of theV-shaped conduit branches subdividing the said V-shaped conduit into twointerconnecting guide portions, the middle portion of the Y -shapedconduit comprising a horizontally extending elongated plate of U-shapedcross section with the arms of the U merging with said diverging armsand defining a guideway in communication with said V-shaped conduitwhereby the two split flaps of the trimming strip are guided by theV-shaped conduit and the remaining portion of the trimming strip isguided by the U-shaped plate for attachment of said trimming strip to aknitted article, and means supporting said Y-shaped conduit wherein theend sections of the diverging Y arms are intersected by the work supportof the machine and the end of one diverging Y arm is beneath said worksupport; 2. A double chain sewing machine according to claim 1,including means defining an auxiliary guide for guiding a free edge ofsaid trimming strip.

' 3. A double chain sewing machine according to claim 2, in which saidauxiliary guide comprises a U-shaped member for receiving said trimmingstrip therein and guiding said strip during attaching thereof to saidknitted article.

4. A double chain sewing machine according to claim 3, inwhich saidauxiliary guide comprises means for variably positioning said guiderelative to said work support thereby to accommodate strips of differentwidths.

References Cited by the Examiner UNITED STATES PATENTS 114,387 5/71Allebaugh et a1. Q 112-137 514,606 2/94 Riker 112-137 976,963 11/10 Weiset a1. 112-137 1,230,906 6/17 Krug et a1 l12138 1,268,415 6/18 Willis112137 1,536,517 5/25 Oldfield 112-137 1,562,446 11/25 Ham 112-1381,932,575 10/33 Cooper et a1 112136 1,969,950 8/34 Seaman 1121372,011,512 8/35 Carmichael et a1. 112262 2,313,261 3/43 Podgorny .Q112152 2,940,406 6/60 Marforio 112-197 2,972,318 2/61 Schindler 1121472,989,018 6/ 61 Bleicher 1l2262 FOREIGN PATENTS 17,595 1902 GreatBritain.

JORDAN FRANKLIN, Primary Examiner.

DAVID J. WILLIAMOWSKY, Examiner.

1. A DOUBLE-CHAIN SEWING MACHINE HAVING A WORK SUPPORT A NEEDLE PLATE,WORK FEED MEMBERS AND A NEEDLE BAR FOR ATTACHING AN OUTER WEAR TRIMMINGSTRIP SPLIT TO FORM TWO SIMILAR FLAPS SUPERPOSED IN PART AT THEIRBORDERS AND JOINED TO THE EDGE OF A KNITTED ARTICLES, SAID GUIDECOMPRISING A Y-SHAPED CONDUIT IN CROSS SECTION WITH THE OPEN END OF THEY TURNED TOWARD THE NEEDLE PLATE AND THE NEEDLE BAR OF THE MACHINE, SAIDGUIDE COMPRISING BENT OVER END PORTIONS ON THE DIVERGING ARMS OF THE Y,CONVERGING SECTIONS CONNECTED TO SAID BENT OVER POSITION SITUATED WITHINSAID PARALLEL WITH SAID DIVERGING Y ARMS, A BRIDGE PIECE JOINING SAIDCONVERGING SECTIONS AT THEIR ENDS ADAJCENT THE JUNCTION OF THE DIVERGINGY ARMS DEFINING A SUBSTANTIALLY V-SHAPED CONDUIT IN CROSS SECTION, AV-SHAPED PLATE IN CROSS SECTION SUPPORTED BY SAID BRIDGE PIECE WITHINSAID V-SHAPED CONDUIT, TONGUES ON SAID V-SHAPED PLATE FITTING INTO EACHOF THE V-SHAPED CONDUIT BRANCHES SUBDIVIDING THE SAID V-SHAPED CONDUITINTO TWO INTERCONNECTING GUIDE PORTIONS, THE MIDDLE PORTION OF THEY-SHAPED CONDUIT CMPRISING A HORIZONTALLY EXTENDING ELONGATED PLATE OFU-SHAPED CROSS SECTION WITH THE ARMS OF THE U MERGING WITH SAIDDIVERGING ARMS AND DEFINING A GUIDEWAY IN COMMUNICATION WITH SAIDV-SHAPED CONDUIT WHEREBY THE TWO SPLIT FLAPS OF THE TRIMMING STRIP AREGUIDED BY THE V-SHAPED CONDUIT AND THE REMAINING PORTION OF THE TRIMMINGSTRIP IS GUIDED BY THE U-SHAPED PLATE FOR ATTACHMENT OF SAID TRIMMINGSTRIP TO A KNITTED ARTICLE, AND MEANS SUPPORTING SAID Y-SHAPED CONDUITWHEREIN THE END SECTIONS OF THE DIVERGING Y ARMS ARE INTERSECTED BY THEWORK SUPPORT F THE MACHINE AND THE END OF ONE DIVERGING Y ARM IS BENEATHSAID WORK SUPPORT.